Important Note!
Doing this requires running a script inside Discord, historically Discord has allowed these perfectly fine but it was for advanced people only and Discod discovered non-advanced users were copying and pasting random scripts people gave them which ended up being malicious and harmful to their account.
Discord has since blocked access to scripts unless you enable a hidden setting. The script below is open source and commented. Anyone is welcome to verify the legitimacy of it. It's very simple in how it works. However if you proceed further and enable custom scripts, I highly reccomend to disable it afterwards unless you know what you are doing. There's a reason Discord disabled this feature, don't even run scripts without knowing what they do first.